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Finding the Fourth Proportional to 391,592.02, 540,386.49 and 230,456.56

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Solution

The fourth proportional to 391,592.02, 540,386.49 and 230,456.56 is: 318,023.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,592.02 : 540,386.49 = 230,456.56 : x
  2. Step 2: Convert to fraction form
    391,592.02/540,386.49 = 230,456.56/x
  3. Step 3: Cross multiply
    391,592.02x = 540,386.49 × 230,456.56
  4. Step 4: Simplify right side
    391,592.02x = 124,535,611,555.87
  5. Step 5: Solve for x
    x = 124,535,611,555.87/391,592.02
  6. Step 6: Final answer
    x = 318,023.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.